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2019-02-11 13:00 UTC

Kattis Set 05

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2019-02-18 09:29 UTC
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Problem G
Program

Mirko is trying to debug a piece of his code. First he creates an array of $N$ integers and fills it with zeros. Then he repeatedly calls the following C++ procedure:

void something( int jump ) {
  int i = 0;
  while( i < N ) {
    seq[i] = seq[i] + 1;
    i = i + jump;
  }
}

As you can see, this procedure increases by one all elements in the array whose indices are divisible by jump.

Mirko calls the procedure exactly $K$ times, using the sequence $X_1,X_2,X_3, \ldots , X_ k$ as arguments.

After this, Mirko has a list of $Q$ special parts of the array he needs to check to verify that his code is working as it should be. Each of these parts is defined by two numbers, $L$ and $R$ ($L \leq R$) the left and right bound of the special part. To check the code, Mirko must compute the sum of all elements of seq between and including $L$ and $R$. In other words $\mathtt{seq}[L] + \mathtt{seq}[L+1] + \mathtt{seq}[L+2] + \ldots + \mathtt{seq}[R]$. Since he needs to know the answer in advance in order to check it, he asked you to help him.

Input

The first line of input contains two integers, $N$ ($1 \leq N \leq 10^6$), the size of the array, and $K$ ($1 \leq K \leq 10^6$), the number of calls to something that Mirko makes.

The second line contains $K$ integers: $X_1,X_2,X_3, \ldots ,X_ k$, the arguments passed to the procedure ($1 \leq X_ i < N$).

The third line contains one integer $Q$ ($1 \leq Q \leq 10^6$), the number of special parts of the array Mirko needs to check.

The next $Q$ lines contain two integers each $L_ i$ and $R_ i$ ($0 \leq L_ i \leq R_ i < N$), the bounds of each special part.

Output

The output should contain exactly $Q$ lines. The $i$-th line should contain the sum of elements $\mathtt{seq}[L_ i] + \mathtt{seq}[L_ i+1] + \mathtt{seq}[L_ i+2] + \ldots + \mathtt{seq}[R_ i]$.

Sample Input 1 Sample Output 1
10 4
1 1 2 1
3
0 9
2 6
7 7
35
18
3
Sample Input 2 Sample Output 2
11 3
3 7 10
3
0 10
2 6
7 7
8
2
1
Sample Input 3 Sample Output 3
1000000 6
12 3 21 436 2 19
2
12 16124
692 29021
16422
28874